R.V.R. Elettronica URP, Technical Manual

Page: 19 / 46

URP Technical and Maintenance Manual
R.V.R. Elettronica S.r.l. (Bo) Pag. 19
CHAPTER 3
INSTALLATION PROCEDURE
3.1 INTRODUCTION
This chapter contains the information required to install the URP
and carry out preliminary checks.
3.2 UNPACKING
Remove the unit from its packing and, before anything else, ensure
that the unit has not suffered any damage during transit and that all
front and rear panel controls are operational.
3.1 INSTALLATION
To install the URP exciter, carry out the following procedure:
1) Connect a suitable dummy load (50 ohm) to the antenna connector
(13 Fig.1) or connect to the intended antenna (50 ohm).
The unit should be connected to the proper load to ensure that is
does not generate unwanted spurs or get damage deu to high VSWR
caused by antenna or load mismatch.
Antenna VSWR should be 1.5:1 or better.
2) Set the desired operaring frequency on the front panel
digi-switches.
An additional 50KHz may be set with jumper JP1 on the synthesizer
board.
3) Connect the audio line to the front panel.
The unit will accept either a line input of 0dBm or a microphone
input of approx 20mV rms.
The desired input in selected with the Line/Mic switch (2 Fir.1)
on the front panel.
This input will accept signals up to 100KHz. The user has the option
of using either mono or a multiplex signal from stereo generator.
The URP unit do not contain an internal streo generator.
4) Connect 12 to 13.8 volts DC to the rear panel.
CAUTION : Observe the polarity of DC volatge.
Plus goes ti the red terminal and minus goes to he black terminal.
The URP units contain a reverse current diode to protect the unit
against power reversal.
The purpose of this diode is to blow the fuse in the event of DC
input reversal.
The fuse is 4A for the 10W version and 3.15A for the 2W version.
The size of the wire should be sufficient to prevent volatge drop